04351e92908d4c2e25b3938e86be309bed42f841ecf5de4e3e41411aafc45203

Analysis

max time kernel
147s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28/02/2024, 07:44

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General

Target

2024-02-28_5d63679b72c6e0fd1ef3266ba8bbb148_cryptolocker.exe
Size

85KB
MD5

5d63679b72c6e0fd1ef3266ba8bbb148
SHA1

46ec4cb73bef854d0cd825fc00195b2bf0f54526
SHA256

04351e92908d4c2e25b3938e86be309bed42f841ecf5de4e3e41411aafc45203
SHA512

28e4c50d1a54513e271e7503f9e25a2c68284e68dec048ef44c36dd1a69f837c72b25679f2f9d275ad99acb5930c42b4e5a13a771456ee684dfe3c7247bf854d
SSDEEP

768:XS5nQJ24LR1bytOOtEvwDpjNbZ7uyA36S7MpxRXrZSUfFKazNclMjNUvP23:i5nkFGMOtEvwDpjNbwQEI8UtzNcO88

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/972-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023206-13.dat	CryptoLocker_rule2
behavioral2/memory/972-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2856-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2856-53-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/972-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2856-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2856-53-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral2/memory/972-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x0008000000023206-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/972-17-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/2856-18-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/2856-53-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\Control Panel\International\Geo\Nation	misid.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\Control Panel\International\Geo\Nation	2024-02-28_5d63679b72c6e0fd1ef3266ba8bbb148_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2856	misid.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 972 wrote to memory of 2856	972	2024-02-28_5d63679b72c6e0fd1ef3266ba8bbb148_cryptolocker.exe	90
PID 972 wrote to memory of 2856	972	2024-02-28_5d63679b72c6e0fd1ef3266ba8bbb148_cryptolocker.exe	90
PID 972 wrote to memory of 2856	972	2024-02-28_5d63679b72c6e0fd1ef3266ba8bbb148_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-02-28_5d63679b72c6e0fd1ef3266ba8bbb148_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-28_5d63679b72c6e0fd1ef3266ba8bbb148_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:972
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:2856

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\misid.exe

Filesize
85KB

MD5
d2e36986052bcffb425e97b3e58125b3

SHA1
a5ef84be7984abb66b0f8871f45ab76113509def

SHA256
1aa07a3d6d62a2ed87387cf2dd046f3f4a4b6915e9a358d951ad4366a08534f3

SHA512
c7fa3a0b5b46fc0be578bdc82bbb5ef09b089c6259dda3f18365dbac29138925ea4079ad6fd4a819563f45e7c755ffbffff2ae1d3c2943e0629a0a0a6de13efc

Download Submit
memory/972-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/972-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/972-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/972-3-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/972-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2856-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2856-20-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/2856-22-0x0000000000640000-0x0000000000646000-memory.dmp

Filesize
24KB

Download
memory/2856-53-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download